Plow structure.



R. J. ALTGELT.

PLOW STRUCTURE.

APPLICATION FILED SEPT. 29. 1911.

Patented May 21,1918.

2 SHEETS-SHEET l.

R. J. ALTGELT.

PLOW STRUCTURE.

APPLICATION FILED SEPT-29. um.

Patented May 21,1918.

2 smsnssnzn I I i l NESSES RUDOLPH JOSEPH AJLTGJEJLT, 0]? SOUTH BEND,INDTANA, ASSIGl-NOR TO OLIVER GRILLED PLOW WORKS, 012 SOUTH BEND, INDIA.

PLOW STRUCTURE.

Patented May 2f, T9TS.

Application filed. September 29, 1917. Serial No. 193,969.

To all whom it may concern:

' Be it known that I, Rooonrn J. America, a citizen of the UnitedStates, and a resident of South Bend, in the county of St. Joseph andState of Indiana, have invented certain new and useful Improvements inPlow Structures; and I do hereby declare the following to be a fullclear, and exact description of the inventlon, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in plow structures and moreparticularly of the engine gang type,th.e object of the presentinvention being to provide simple and eflicient means for automaticallylooking the plow structure in elevated position when the same has beenraised by lifting mechanism and to release the locking means when it isdesired to lower the plow structure to working position.

With this and other objects in view, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

In the accompanying drawings; Figure 1 is a plan view of an engine gangplow structure embodying my improvements; Fig. 2 is a side elevation,and Figs. 3, 4:, 5, 6, 7 and 8- are detail views.

1 represents a plow frame comprising a plurality of plow-beams 2, 3 (twosuch beams" being shown in {the drawing although a greater number may beemployed) connected and held properly spaced apart by a diagonal brace4:- The plow beams are provided at their rear ends with standards 5 towhich plow bases 8 are secured. The beams 2, 3 with the standards 5 andbases 6 thus constitute a plow structure, and its rear portion issupported by land and furrow wheels 7 and 8 through the medium of crankaxles 9 and 10.

The crank axle 9 is mounted in a bearing 11 on a bracket 12 secured tothe beam 2 and in a bearing 13 on a bracket 14 secured whereby a head 18is formed and this head is in position to be engaged by a member of amanually operable mechanism 19 for raising the plow and adjusting thesame for depth of plowing.

A bracket 20 is secured to the axle 10 at the juncture of its crank 21therewith and is provided with a threaded member 22 through which thethreaded portion of a shaft 23 passes,said shaft also passing through asleeve 24 pivotally mounted in the bifurcated end of an arm 25 securedto the end of the axle 9. The shaft 23 is provided with a crank orhandle 26 for turning the same to effect adjustment of theplow-structure for leveling the same.

The bracket 12 is provided with a sleeve 27 which constitutes a bearingfor one end portion of a transverse shaft 28,the other end of said shafthaving a bearing in the bracket 1% secured to the beam 3. The shaft 28projects beyond its bearing in the bracket 12 and has secured thereto,one end of a curved or segmental rack 29 which is adapted to be movedinto mesh with a gear 30 rotatable with the carrying wheel Z for raisingthe plow structure. The rack 29 is provided near its free end with ashallow notch 31 and a beveled face 32 which operate to cause the rackto move out of mesh cated upper end, one end of a bar 29 is' pivotallyconnected. The forward end of this bar is pivotal'ly connected with andbetween the upper ends of links 33 by means of a pin 34, one end ofwhich projects laterally beyond one of said links, and the lower ends ofthe latter are pivotally attached to spaced lugs 35 which project uwardly from an intermediate portion of the bracket 12.. V

When the plows are in working position, the segmental rack will be heldin raised position by means of a spring-pressed cam device 36 mounted onthe beam 3. cam latch device includes a pivotally mounted arm 37, towhich one'end of a rod 38 is connected,-the other end of saidrool-beingpivotally attached to an arm 39 so This latter, a trip arm 40 issecured. A hand lever 41 is secured to the pivoted arm 37 of the latchdevice.

The forward ends ofthe beams 2, 3 are brought together and securelybolted and one of said beams is made with an extension 42, to theforward end of which, two plates forming a clevis 43 are secured,saidclevis plates being each provided with a plurality of holes 44 wherebythe rear jaws of a shackle 45 may be adjustably pivoted to the clevis bymeans of a horizontal pin 46. The forward jaws of the shackle aredisposed one above the other and at right angles to the rear jaws ofsaid shackle and are perforated for the accommodation of a verticalpivot pin 47 which serves to pivotally connect said shackle directly toa bracket or proj ection48 rigid with the rear axle mounting 49 of atractor 50. The bracket or projection 48 may be provided with aplurality of perforations 51 in horizontal alinement whereby theconnection of the shackle which couples the clevis of the plow structureto the tractor may be adjusted laterally.

By means of the connecting devices above described, the plow structureis so connected directly with the tractor that its rear portion may beraised and lowered and so that it may swing laterally to accuratelyfollow the trail of the tractor.

During the raising of the plow structure by the power lift mechanism,the crank axle 9 will turn in its bearings and the bracket 29* will moveforwardly. As the bracket 29, thus moves it will cause the bar 29 toalso move forwardly and the links 33 to turn on their pivotal connectionwith the bracket 12, until said bar becomes disposed in the notch orrecess afi'orded by the lugs 35. The pivot pin 34 which connects the bar29 with the links 33 will now have moved beyond a line passing throughthe pivotal connection of the links 33 to the lugs 35 and the pivotalconnection of the bar 29 with the bracket 29 and the plow structure willthus be locked in its raised position.

When the parts are in the locked-up position, the projecting end of thepin 34 will be disposed over the arm 40 on the transverse shaft 28. Ashort downward movement of the hand lever 41 will now cause a forwardmovement of the arm'37 (limited by stop lugs 5253 on the cam device 36,)and motion will be imparted through the rod 38 and arm 39 to thetranverse shaft 28, so as to turn said shaft slightly in a direction toraise the trip arm 40 and cause it to engage the projecting pin 34 andmove the same upwardly far enough to break the lock above described. Theplow structure may now descend by gravity to the position shown in Fig.2, with the plow bases ready to enter the ground.

I do not, in this case, claim the means herein shown and described forraising and lowering the plow structure and the connection of the latterwith the tractor, the same being embodied in my copending applicationSerial No. 193,968; nor do I claim in this case, the manually operablemechanism for raising the plow structure and adjusting it for depth ofplowing, the same being covered by my copending application Serial No.193,670.

Various changes might be made in the details of construction of myinvention without departing from the spirit thereofor limiting itsscope, and hence I do not wish to restrict myself to the precise detailsherein set forth.

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is I 1. The combination with a plow structure,means for connecting the same with a draft means, crank axles mounted onthe plow structure, wheels on said crank axles, and means for raisingthe plow structure, of an arm independent of the raising means securedto one of said crank axles, a bar pivoted at one end to said arm, and alink pivoted at one end to said bar and at the other end to a part onthe plow structure independent of the raising means, whereby when theplow structure has been raised by the raising means, the connection ofthe link to the bar will pass beyond a line passing through theconnection of the link to the k plow structure and the pivotalconnection of the bar to the arm on the crank axle and lock the plowstructure in raised position.

2. The combination with a plow beam, means for connecting the same witha draft means, a bracket secured to the beam, a crank axle mounted insaid bracket, and a wheel on the crank axle, of an arm secured to thecrank axle, lugs on the bracket forming a recess between them, linkspivoted at one end to said lugs, and a bar pivoted at one end to theother ends of said links and at theother end to the arm on the crankaxle, said bar adapted to enter the recess between said lugs and movethe pivotal connection of the links to the bar, beyond the pivotalconnection of the links to said lugs.

3. The combination with a plow structure, means for connecting theforward end of the same to draft means, crank axles mounted on the plowstructure, brackets affording bearings for said axles, and wheels onsaid axles, of an arm on one of said axles, links pivoted to one of saidbrackets, a bar pivoted at one end to said arm, a pivot pin connectingthe other end of said bar to the links and projecting laterally beyondthe same, means for raisin the plow structure and causing the plvotaconnection of the bar to the links to move beyond a line passing throughthe weaves tit pivotal connection of the links to the bracket and thepivotal connection of the bar to the arm on the crank axle to lock theplow structure in raised position, a shaft on the 5 plow structurehaving an -arm disposed under the projecting end of said pivot pin whenthe plowstructure is in raised position, means for holding said shaft innormal position, and means for turning said shaft re, to rase the armthereon for raising the links to releasd the plow structure and permitit to descend.

In testimony whereof, have signed this specification in the presence oftwo subscribing witnesses.

' RUDOLPH JOSEPH ALTGELT.

Witnesses:

EDWIN NIOAR, CHARLES ADDISON WEBSTER.

